Valve mechanism



Patented July 3, .1928.

UNITED. STATES yPlvriiisi'r OFFICE.

THOMAS H. MosELEY, or oxnanomi CITY, AND CHARLES E. Daunen, or oUsHING,

oxLAnonaw i y vuvl; MncHANIsin.

Appleman med November 29,1926. semaine. 15i,5so.`

This invention relates to valve mechanism and vhas special retei'enceto means for automatically cutting oit` the flow of the liquid when the liquid attains a predetermined level iii a tank or other receptacle.` The'in vention also has for its object the. provision of means whereby excessive opening of the cut o valve will be prevented and the closing of the valve will be effected espeditiously. ,The invention is illustrated 1n the accompanying drawing and Willbe herein` after fully set forth.

In the drawing: i n

Figurel is a sectional elevation of one embodiment of the invention;

Figs. 2 and 3 are enlarged sections through the cut-ofi' valve taken in `planes ata` right angle to each other.

level of the liquid in the main `reservoir, or

tank 1. Housed within the governor tank 5 is a float 7 `from which a gagebar or stem 8 rises, as shown, the said stem having openfV ings 9 therethrough and extending at regu lar intervals throughoutV its height. The branch 3 communicates directly with the valve casing lA `and at a side ofthe casing opposite the pipe 10 which leads from the source of supply. Within the casing 4 is a partition 11 having a poit 12 therethrough which may be closed by a valve 13. Carried by the lower side of the casing 4 and in axial alineinent with the port 12 is a plug 14 which cooperates with a dashpot 15 on the4 under side of the valve 13 to cushion the closing movement of the valve and thereby avoid shock to the apparatus.` The valve 13 is guided by the upper portion 17 of the valve casing andthe valve stem 18 works in a sleeve or bonnet 16 secured upon and rising from the top 17 of the casing, the valve stem passing through the cap 19 which closes the top of the said guide or bonnet, and being thereby held to a rectilinear movement. It should be noted that the stem is free of threads so that, irma-@1y glides" relative te the cap 19 and is not caused to rotate by its ,i

engagement with the same. Secured upon the top 17 of the valve casing is a cylindrical housing 20 whichrises from said top and is provided in one side with :an obliquely disposed guide slot 21 and `at its opposite side with an opening 22. -A lever or handle" member 23 is firmly secured to the valve stem 18 and passes at one side through theslot 21 to be'guided thereby` while at the other sider it plays within the opening 22, a retractile spring 24 being attached to` the handle inember and the housing, as shown. Carried by the upper end of the housing 20 is a guide 25 which receives the u per endof the stein 18 4and thereby prevents ateral movement of the latter, and threaded into the upper end of this guide4 in axial alinement with the stemy is a `stopscrew. 26 which may be adjusted,

longitudinally.` of the guide so as to be presented to the upper end ofthe stein and limit, the upwardmovement of the same in an obvious manner, the said stop screwgbeing proi yided` with a handle 27 at its upper extremity, of any `approved form. Secured rigidly i to the stem 18 just below the guide25 `is a` A shoulder orabutment 28 which may be eiigaged by` a latch 29 and is tapered upwardly,

.as shown. n This latch 29 is illustrated as an.

L-shaped bar, `fulcrumed at its upper end on l the upper edge of the housing 20 and having;

a lever onerankarin 3D1-med to itsfulcrum and extending laterally therefrom, the said Vleveror crank arm being accommodated in a Y notch 31 in.Y the upper edge of the housing and beine` constructed at its free end to pass around the gage bar 8 and aid in guiding the same. A pin 32 isprovided to be enga ed selectively in the openings 9 in the gage ar below the said lever or crank arm and to actuate the said element by impact against the under side of the same.

The operation of the apparatus will, it is thought, be readily understood from the foregoing description, taken in connection with the accompanying drawing. The weight of the valve cooperating with the tension ofthe spring 24 tends to hold the valve seated, and the handle 23, in the closed position of the valve, will be at the lower end of the inclined guide slot 21. The abutment 28 will be below the latch 29 and it will be noted that the edge of said abutmentj is beveled downwardly and outwardly s0 the liquid in the governor tank willsimultaf neously drop and the float 7- will descend so` 40 e that upon upward movement it will ride easily past the end of the latch and the `vertical dimension of the abutment is such that in itsV lowest position the vend of the latch will rest upon the edge of the abutment and will never project over the top of the abutment. When the tank 1 is to vbe filled, the handle 23 is swungvsidewise and its engagement with the diagonally disposed. guide slot 2l will cause it to move upwardly at the same time, the stem '.18 being thereby caused to rise and the valve lifted from its seat so that flow through the v alve casing may occur. The upward movementof the valve stern`willcarry the abutment28 past the latch 29 and as soon as the abutment has cleared the latchnthe weight of the lever arm 30 will swing thek latch into position under the abutment to engage' and support Vthe same and maintainv the valve in the open position, as shown by fulllines in Fig.13. The liquidwill then ilow into the reservoir or tank l and will simultaneously .rise to the same level in the governor tank 5, and as it rises' in the governor tank the float 7v cut off'the flow. As the liquid is withdrawnfrom the reservoir through use, Vthe level of that the latch' will be returned to position to be yengaged vby the abutment 28 when the valve is again opened. Y

Our structure ris exceedingly simple in construction and is certain in its operation so that overflow of reservoirs will be prevented and waste of liquid therebyavoided. `The apparatus maybe advantageously employed wherever a plurality of reservoirs are connected to one source of supply and it is desired to maintain the same level in all the reservoirs," and Vit is to Vbe understood that'` '..the .drawing is illustrative only and notrestrictive.: g

' Having-thus described the invention, we Claim:

' l. In a'valvemechanism, the combination Vof a valve casing, a housing `rising from Vthe valve caslngand provided ywith an inclined slot 1n one wall, a valve mounted 1n the valve casing and having` a stem 'rising through the housing, a handle member secured to said stem and extending laterally 'therefrom through the inclined slot in the housing, a retractile spring attached to said handle and to the housing and tending to move the handle to valve-closing sition, a shoulder on thevalve stem ,above t e handle, a latch mounted on the housing to engage the said shoulder when the valve is in open position, and oat controlled means to reias'e said'latchV and'permit the valve to c ose.

n 2. Ina valve mechanism, the combination 4 vof a valve, a valve stem rising from" the valve, means tending constantly to vclose the valve, means for opening thevalveqa shoulder on the valve stem, an upwardly tapered surface rising from the shoulder, a housing` around the stem, a latch pivotally mountedv Y on the housing and having its inner end bearing against said tapered surface when the valve is in closed position and adapted to vengage Vunder the shoulder whenV the Vvalve is in open position, an arm extending outwardly from the'latch and havingy its end free, and float-controlled means to impinge against and lift the. outer free end of said V,arm whereby to release the latch and permitthe valve to close.

tures.

THOMAS H. MosELEY. [Li 5.] CHARLES E. DRoEGE. [1.. sg

In testimonywhereof'we aiix our signal 

